Frametop Input Settings' Gaze page gets two settings, saved in frametop.conf and
read again by ft-gazed when the file changes: Eye tracker (GAZE_TRACKER: SteamVR's
or our own, frame-eyes' fe-trackd) and Eye bias (GAZE_EYE: auto, left, right).
ft-gazed now combines the eyes, each calibrated on its own: SteamVR's set 2 eyes
with the probe's Left eye and Right eye calibrations, or our tracker's eyes as
they come. Without per-eye calibrations, or with --source, it keeps the older
one-source path. A pointer nudge finds its look from the raw gaze the helper
echoes back; with our tracker it goes to fe-trackd as a click.
The bias leans instead of choosing (gazecal.EyeWeights): on 306 live clicks the
eyes' errors partly cancelled, both together 0.65 deg off against 0.96 and 1.11
for either alone. Left or Right counts that eye twice; auto weights each eye by
its RMS miss at its last 20 nudges, since the calibration's fit picked the wrong
eye on SteamVR's test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
SteamVR's combined gaze keeps going on one eye, but it holds the lost
eye's yaw, so the gaze moves half as far sideways as the eyes do.
ft-gaze now reads each eye's tracking uncertainty and raw measurement
from eye-server.mmap. When the tracker loses an eye, ft-gazed takes the
gaze from the other one, plus the offset that eye usually shows
against both, learned while both are seen. On a recording, one eye
alone came out a median 0.8 degrees from both eyes' gaze.
Glances down at the keyboard, past every screen, aren't sent. The
pointer stays put, and eyes lost there don't count as lost.
The gaze probe gets a Headset fit mode. It shows per-eye tracking,
openness and confidence, maps where each eye gets lost, gives hints,
and has a guided check. The settings app opens it from the Gaze page
and shows how often each eye is lost. The probe can also test each eye
alone, and its side panel now collapses to a title bar so the dot
isn't hidden behind it.
Snapping to UI elements is deferred; the mouse drag is the correction.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Frame controllers aren't input devices on the host, so the pointer
helper reads them with SteamVR input (vrbuttons.h, actions/), one action
set per button, and sends presses to the relay, which does the mapped
action like for a mouse button. Only mapped buttons are taken, at an
overlay-global priority (SteamVR's experimental "Enable global input from
overlays"), and only outside games unless In games is on. Frametop Input
Settings gets a Controllers page to map them.
Gaze mode: a left press while the gaze has the pointer isn't sent at
once. The pointer stops, you drag it onto what you meant with the button
held, and the release clicks there; a press held still for
POINTER_GAZE_HOLD (0.5 s) becomes a real press, for drags. The dot shows
only while the mouse moves it (POINTER_GAZE_SHOW), while a press is held,
and as a pulse per click. Outside games the pointer stays on while gaze
mode is on. ft-gazed takes a third of each lesson's offset instead of all
of it: in the first live test one 6 degree lesson moved everything and put
the next target 7 degrees off. Frametop Input Settings gets a Gaze page.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Live, the tracker had lost the left eye (openness 0, set 2's eyes 9 to 14
degrees apart) and ft-gazed dropped 96% of samples as blinks. A blink is now
both eyes closing, each judged against its own recent good readings, and the
service defaults to mmap set 1, SteamVR's combined gaze, which keeps going
with one eye. With set 2, one-eye samples are still dropped, since its
combined direction is off by half of what the lost eye reads.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ft-gazed runs ft-gaze, drops blinks and dropouts, smooths with a fixation
lock, applies the probe's calibration plus what the pointer has taught
since, and sends the corrected gaze to the pointer helper at 90 Hz. The
helper sends lessons back (a nudge before a click), which are learned and
saved. It only reads the eye tracker; nothing of SteamVR's is written.
gaze/run.sh installs it as a user service that starts with SteamVR;
ft-gazectl turns gaze mode on and off and shows the service's status.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
